Improvement in lamps



C. C. STANSELL.

Lamp.

Patented .July 22 u UNITED STATES PATENT' OFFICE...

CHARLES C. STANSELIYJ, OF MIDDLEBOROUGH, ASSIGNOR TO HIMSELF, AND AARON XV. ROOKWOOD, OF NEWTON, MASSACHUSETTS.

Specification forming partof Letters Patent No. 35,979, dated July :22 18652.

. To LZZ whom, it may concern:

Be it known that I, CHARLES C. STANsELL, a citizen of the United States of America, and a resident of Middleborough, in the county of Plymouth and State of Massachusetts, have invented a new and useful or Improved Lamp;

and I do hereby declare the same to be ful-ly described in the following specification, and

juster,whereby it is prevented from charring the wick or too rapidly vaporizing a liquid hydrocarbon when in the wick.

In the drawings, A denotes a l'amp, which is furnished with astationary cylindrical wicktube, B,that extends upward from the bottom, a, of the oil-reservoir b, and has an air-passage, c, leading through the stand of the lamp, so as to supply the tube B with air for the iiame of the wick.

The wick shown at D is to be tubular'and to surround and 'fit tightly on and project up to the top of the tube B, which should extend some distance above the lamp-cap E. A female screw, d, is cut in the mouth of the cap E,and receives the flame-adj uster F, or a male screw, e, made on its/external surface. This flame-adj uster is tubular in form and surrounds the wick where it projects above the lampoap. At its upper part, or that marked f, the flame-adjuster is made to fit closely to the wick; but below this part, which need not be but about one'quarter of an inch in depth, the llame-adjuster is so constructed that there is an annular space, g, between it and the wick andsurrounding the latter. The adjuster is made With a milled dange, h, by which it may be rotated when screwed vinto the lamp or the cap thereof. In case the body of the lamp be made of glass, am'etallic cap would be cemented on the neck of the opening of the oil-reservoir; `but when the oil-reservoir is constructed entirely of metal the amevadjuster may be screwed directly into its neck or mouth.

The flame adjuster is to be eitherscrewed into the lamp-body or its cap, or is to be otherwise so applied thereto as to enable it to be readily either elevated or depressed and sus tained in position after being so moved or adjusted with reference to the top of the wick. I prefer to fit the adjuster to the lamp by screws, as hereinbefore described, as such afford a ready and nice adjustment of it.

The annular space g within the adjuster and surrounding the wick vprevents the heat of that part of the adjuster which is below the portionf not only from charring the wick but from causing a too rapid vaporizing ofthe oil inthe upper part oftheI wick. It is desirable to have the bearing f of the adjuster on the wick very narrow. In proportion as we lower the adjuster on the Wick the greater will be the Vsurface or extent of wick exposed to the action of the flame when th e lamp is lighted, and consequently the higher will be the iiame. By means ofthe adjuster the height -of the liame may be so regulated as to prevent; the dame from developing smoke.

In other lamps the wick has to be raisedin order to increase the height of the flame and -lowered when it may be desirable to reduce such height. In my lamp, however, the wick is stationary and a tube surrounding it is movable. In this way I make a verysimple lamp, in which no apparatus for either raising or lowering the wick is elnployed-a-lamp in which coal-oil can be burned to excellent advantage without requiring any glass chimney ,or air-deflectorsuch as are Vused iu ordinary Argand lamps.

Fig. 3 denotes a vertical section of a lamp furnished with my invention and with devices y reservoir E of the-lamp by one or morepipes. rlhe air-conduit A', at its upperl end, is open, but at its lower end it communicates with the internal air-passage,H,of the Wick-tube. yThe flameadjuster is shown at F as screwed on the intermediate tube,which separates the airpassage from the wick-chamber. The devices represented in Fig. 3 are simply to show a mode in which I have contemplated the applicationof the principle or character of my invention by which it may be distinguished from others.

The flame-adj uster may be constructed entirely of metal,or itmay be made either Wholly orpartially of glass or other suitable material. A wick movable or adj ustable relatively to its carrier is liable to gather carbon and become charred orburned; but when the Wick is made stationary on the wick-tube and the llame-adjuster is applied to both in accordance with my invention the formation of carbonaceous or other deposits on or theY charring of the Wick at its top by the flame will be very much less likely to result, and consequently the height of the flame will not only be more even but less liable to vary, -when the Wick may once be so adjusted as not to smoke.

I do not claimaiiame-adjuster as applied to a tube encompassing and fitting closely to a wick, and whether such wick be either solid or tubular my invention having reference to an arrangementof wick-tube, wick, and Hameadjuster. In such arrangement the Wick sur` rounds the wick-tube, and is surrounded and vin contact with the flame-adjuster, there being C. C. STANSELL.

Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

